Quasars are the most energetic objects in the universe, which is why astronomers can observe them from so far away. Credit: NOIRLab/NSF/AURA/J. da Silva Nearly every galaxy hosts a monster at its center — a supermassive black holemillions to billions times the size of the Sun. While there’s still much to […]

Artist’s concept illustration depicting cells treated with antibiotics (red) propagating in a river environment, while those that have been genetically modified to remove the gene that produces the fluoride exporter (green) die off in the presence of fluoride. Credit: Lillian McKinney In Michelle O’Malley’s lab, a simple approach suggests a […]